APPLICATION NOTE 1820

White Paper 1: SHA Devices Used in Small Cash Systems


Abstract: This paper describes small cash systems and the use of iButton® SHA devices, specifically, the DS1963S and DS1961S, as the electronically readable tokens in which the cash is stored. Two scenarios are presented. In scenario A, both the tokens and the coprocessor are DS1963S iButtons. In scenario B, the DS1963S functions as coprocessor in a system that uses the DS1961S as tokens or carriers of electronic cash.

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Related Parts
DS1961S iButton 1Kb EEPROM with SHA-1 Engine  
DS1963S iButton Monetary Device with SHA-1 Function  
DS2432 1Kb Protected 1-Wire EEPROM with SHA-1 Engine Free Samples  


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© Dec 20, 2002, Maxim Integrated Products, Inc.
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APP 1820: Dec 20, 2002
APPLICATION NOTE 1820, AN1820, AN 1820, APP1820, Appnote1820, Appnote 1820